Ice-cream freezer



(Modem 2 Sheets-Sheet 1.

P. CHANDLER. IOE CREAM FREEZER.

No. 416,567. Patented Dec. 3, 1889 N PETERS. PhnlmLilhognphl-lh Wnmingmm D. G.

(ModeL) I 2'Sheets-Sheet 2.

F. P. CHANDLER.

10E CREAM EEEEZEE. 1 I0.4=16,567. Patented Deg. 3 1889.

N. PETERS. Plmlo-Lilhogmphcr. Waillingk'm, 0:0

'UNITED STATES PATENT OFFICE.

FRANK P. CHANDLER, NASHUA, NEWV HAMPSHIRE.

ICE-CREAM FREEZER.

SPECIFICATION forming part of LettersPatent No. 416,567, dated December 3, 1889. Application filed June 10, 1889- Serial No. 313,789. (No model.)

To all whom, it may concern.-

Be it known that I, FRANK P. CHANDLER, a citizen of the United States, residing at Nashua, in the county of Hillsborough and State of New Hampshire, have invented new and useful Improvements in Ice-Cream Freezers, of which the following is a specification.

This invention relates to that type of icecream freezers wherein a cross-bar detachably connected with the ice-containing tub or bucket carries a drive-shaft and bevel-gears for revolving the can and beater in opposite directions.

The objects of myinvention are to provide novel means for detachably hinging that end of the cross-bar from which the drive-shaft projects; to provide novel devices for holding the cross-bar against lengthwise movement when in its horizontal working position; to provide a novel construction for centering the cross-bar and preventing lateral moveinent thereof when the driving-gear is in operative connection; to provide novel means for detachably connecting the cross-bar with the tub or bucket, and to provide a new and improved construction of parts for driving the can and beater and shielding the bevelgears to prevent clogging thereof or the engagement of the dress or fingers therewith. These objects I accomplish in the manner and by the combination of devices hereinafter described and claimed, reference being made to the accompanying drawings, in which Figure 1 is a central vertical sectional view of a freezer embodying my invention. Fig. 2 is a top plan view of the same. Fig. 3 is a detail side elevation showing the gear-carryin g cross-bar in an elevated inclined position on its detachable hinged connection. Fig. 4 is a detail view of the locking devices for securing the gear-carrying cross-bar on the tub. Fig. 5 is a detail bottom plan view of the cross-bar. Fig. 6 is a detail top plan view of. the freezer-can. Fig.7 is a detail perspective View of the duplex hooked plate for detachably hinging or pivot-ing the cross-bar to the tub or bucket. Fig. 8 is a detail perspective view of the upper end portion of the beater or dasher spindle, and Fig. 9 is a top plan view of the beater or dasher, showing the freezer-can in section.

In order to enable those skilled in the art to make and use my invention, IWill now describe the same in detail, referring to the drawings, wherein The numeral 1 indicates the freezer tub or bucket, of wood or other suitable material, having on the inner side of its bottom wall a step or hearing 2 for the axial pivot 3 of the metallic freezer-can 4, which is provided with a detachable can-top 5, having an attached bevel-gear 6 on its upper side.

The beater or dasher is of that type comprising a spindle 7, provided with lateral heaters 8 and upper and lower arms 9, to which is pivotally connected a vertical scraper-bar 10, that is adapted to work against the interior of the can in advance of the beater-arms. The construction of this beater differs from prior devices of the kind, however, in that the rigid arms 9 of the spindle are formed integral or are otherwise provided with fixed pivot-pins 11, on which are pivotably mounted the castings 12, that'carry the scraper-barlO. By this means the construction is simplified, as I avoid peculiar-formed BGGSSGS in the rigid beater-arms for receiving pivots on the castings carrying the scraper bar.

To the side of the tub or bucket, and proj ecting above its upper edge, is secured a hook-plate 13, the means of attachment here shown consisting of a bolt 14, passing through the plate and tub and confined by a nut 15; but obviously other attaching devices can be employed. The hook-plate is formed or otherwise provided with an open hinge-bearing comprising two similar hooks 16, separated from each other,with a sufficient distance between their points or ends and the upper edge of the plate to permit the convenient insertion and removal of the journals 17 on one end of the gear-carrying cross-bar 18. These journals, as here shown, are formed as a crosshead to the bar, and they project laterally in opposite directions, while they are cylindrical, or approximately so, that they may seat and rotate in the cylindrical bearing formed by the curved inner sides of the hooks. The hook-plate is provided between the two hooks with an upwardly-projecting locking-lip 19, for engaging a beveled lug 20, provided on the under side of the cross-bar at a point hetween the journals. The object of this construction is to secure the journals in the hookplate and prevent their disengagement until the cross-bar is swung upward on the hingejoint, whereupon the beveled lug 19 will ride upon the lip. \Vhen the cross-bar is lowered to its horizontal working position, the lug 20 falls to one side of and bears against the lip 19, which, in connection with the hooks, prevents lengthwise movement of the cross-bar.

By the construction shown, and the peculiar means provided for hinging or pivoting that end of the cross-barfroin which the shaft project-s, I provide for balancing the crossbar in an upright position, as in dotted lines, Fig. If the crank-handle be removed, the outer end of the drive-shaft will strike the hook-plate and serve as a stop to hold the cross-bar upright. The cross-bar is detachably secured at its end opposite the hooked plate by a suitable locking device, composed, as here shown, of a hook-catch 2i, pivoted to the tub or bucket and adapted to engage and disengage the end 22 of the cross-bar.

The cross-bar is made as a skeleton frame, and comprises a central sleeve-bearing joined to an annular web 9a by radial wings 25. The drive-shaft 26 is mounted in sleevebearings 27 and 28, located in a line that passes between the two journals and the tubhooks, and said shaft at its inner end carries a bevel gear-wheel 29, revoluble within the annular web and engaging the bevel-gear on the can-cover, and also engaging a bevel-gear 30, keyed to an arbor 31, which has a cylindrical hub 1 i3, revoluble in the central sleevebearing 23, and provided with an angular socket detachably engaging the angular upper end of the beaterspindle. The annular web is formed with a circular horizontal seat 33 on its upper side, upon which is seated the horizontal laterally-projeeting flange 34 of an arched or domed shield or guard 35, that extends over and covers the several gears above the cross-bar. The lateral flange of the domed shield is provided with perforations or screwholes, through which' pass metal screws 36, that engage screw-sockets in the annular web, whereby the shield can be conveniently and quickly removed and replaced as occasion demands. The gears being covered and shielded, as explained, there is no liability of the fingers or parts of the dress being accidentally caught therein, while the ice or freezing-mixture can be dumped into the tub or bucket without liability of clogging the gears.

In this freezer it is desirable to provide means whereby the revolvingparts above the can-cover can be conveniently lubricated without removing the domed shield; and to accomplish this I construct the shield with an orifice 37, through which the nozzle of an oilcan may be inserted to deliver oil to the central sleeve-bearing. The upper bevel gearwheel 30 is also formed with an oil-conduit 38,1eadn1'g from its upper to its under surface, whereby the oil-can nozzle, after being passed through the orifice in the shield, may be made to discharge the oil into the oil-conduit in the wheel, by which such oil is conveyed to the central sleeve bearing and the arbor-hub revolving therein. The drive-shaft is furnished with the usual crank-handle 39 for operating the gears to rotate the can and beater in opposite directions.

The cover of the freezer -ean is provided at its center with a vertical cylindrical tube 40, that rises above the gear 6 and accurately fits and revolves within the central sleevebearing 23. The beater-spindle 7 projects through the cylindrical tube 40, and directly above the latter at a point inside the sleevebearing the spindle engages the hub of the arbor 31. By this novel construction the can is centered and steadied by the sleevebearing, and a very desirable connection between the two is provided by which the sleevebearing directly resists all the strain incident to revolving the can and heater.

It will be obvious that the gear-carrying cross-bar can be swung on its hinge-joint to raise and lower it without actually disengaging the bar, which is very desirable,while the hinge connection can be broken at will, withoutdetachment of extraneous devices, by the simple movement of the journals from the open bearings.

A very desirable feature of my improved hinge-joint resides in the fact of its being so constructed that the driveshaft on the crossbar extends between the two journals, and also between the two hooks, so that in swinging the cross-bar the drive-shaft works between the hooks. When the cross-bar is raised the shaft does not project up therefrom, as in other hinged crossbar-s.

To accurately center the cross-bar and aid in preventing lateral movement thereof while the freezer is in use, I form the under side of the cross-bar with a pendent tongue l1,l1avin g inclined or beveled sides, such tongue engaging a vertical recess 42 in the top edge of the tub. To hold the locking-catch 21 in the locking position, I pivot to the tub a dog 43, the nose of which is adapted to be forced against the catch above its lower pivoted end, as shown in Fig. 4, so that the catch cannot accidentally disengage the crossbar.

Having thus described my invention, what I claim is- 1. The combination, with the tub, can, and beater of an ice-cream freezer, of a plate socured to the tub and provided with a pair of separated open hooks disconnected at their upper ends and forming pivot-bearings, a crossbar carrying drive-gear and provided at the'sidcs of one end with a pair of journals extending laterally in opposite directions and detachably engaging the open hooks, and a gear-carrying drive-shaft journaled on the cross-bar and extending between the separated hooks, so that when the cross-bar is raised to a vertical position the drive-shaft ICC passes between the hooks, substantially as described.

2. The combination, with the tub, can, and beater of an ice-cream freezer, of a plate secured to the tub and provided with a pair of separated open hooks disconnected at their upper ends and with an upwardly-projecting locking-lip located between the hooks, a crossbar carrying drive-gear and provided at the sides of one end with a pair of journals extending laterally in opposite directions and with a depending lug between said journals, and a gear-carrying drive-shaft journaled on the cross bar and extending between the separated hooks, so that when the cross-bar is raised to a vertical position the drive-shaft passes between the hooks, substantially as described.

3. The combination, with the freezer-tub, the can having a bevel-gear, and beater, of the detachable cross-bar having the gear carrying drive-shaft and formed with the central sleeve-bearing, the radial Wings, and the annular web formed with a circular fiat seat on its upper side, having screw-threaded sockets, a removable and replaceable domed shield having a laterally-proj ectin g annular flange formed with orifices coinciding with the screw-sockets in the annular web, the screws attaching the domed shield, the arbor having a bevel-wheel, and the hub revolving in the sleeve-bearing and engaging the beater-spindle, substantially as described.

4;. The combination, with the freezer-tub, the can having a bevel-gear, and the beater, of the cross-bar having the gear-Garrying shaft and formed with the central sleevebearing, the radial wings, and the annular Web formed with a circular fiat seat having screw-sockets, a removable and replaceable domed shield having an-oiling-orifice and a laterally-projecting annular flange screwed to the annular web, the arbor having a bevel gear-wheel provided with an oil-conduit adapted to register with the oiling-orifice in the domed shield, and a hub revolving in the sleeve-bearing and engaging the beater-spindle, substantially as described.

In testimony whereof I have aflixed my signature in presence of two witnesses.

FRANK P. CHANDLER. Vitnesses:

J. T. SARGENT, A. L. PRIOHARD. 

